Fuse-changer.



'-R. C. GROUT.

FUSE CHANGER.

APPLICATION FILED JUNI: 2s, 1911.

1 ,K0-23,077. Patented Apr. 9, 19142.

2 SHEETS-SHEET 1.

@Homma section on the line A-B of Fig. l. Fig. 6 is a section on the line C-D of Fig. l.

The hub a of the rear wheel is provided with a brake wheel b, for a brake band c.

The brake lever d is secured to the rear fork tube e by a clamp f, having a pin or screw u, on which the lever d can turn when elevated or depressed by the eccentric strap g, to which it is suitably connected.

The eccentric 7L of the strap g receives its motion by means of loose pawls or tongues z', which engage with teeth 7c presented by a member m. This latter is screwed into the in presence of two witnesses.

u ""V """WI, ALW a band passing around the brake-wheel and having its ends attached to the lever at t-wo points equidistant from its fulcrum; whereby on back-pedaling the eccentric strap depresses the lever and causes the band to be drawn tight upon its wheel both from above and below; substantially as described.

In testimony whereof I aiiix my signature FRANZ GOEBEL. [L s] Witnesses: HEINRICH VVNNER,

F. G. WILHELM.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patents. Washington, D. C.

Bonner o. snow, or DENVER. comme.

Specicatioxi of Letters Patent.

" Application led June 28,1911.. Serial No. 635,892.

To all 'whom 'it may concern.- y

Be it known that I, ROBERT C. GROUT, a citizen of the United States, residing' in the city' and county of Denver and State of Colorado, `have invented certain new and useful Improvements in Fuse-Changers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accom panying drawings, and to the characters of reference marked thereon, which formI a part of this specification.

My invention relates to improvements in fuse changers. Y

My improved instrument consists of a device adapted to facilitate the removal of cartridge or inclosed fuses from a cut-out `from each other,

edges of the two jaws, and the latter eingy box and replacing the same without danger of ,receiving a shock.

The device consists of a handle composed of suitable insulating material, as dry wood, ber, orcelain, etc., to one extremity of which 1s secured a hook and a slidable part coperating with the hook for removing the fuse from the cut-out box; while, at the opposite extremity, the handle member is equipped with a device for inserting a Jfuse in the cut-out box. This inserting or replacing part of the instrument is composed of a pair of spring jaws which are sufficiently separated to receive a cartridge fuse,

the said jaws being equipped with relatively short inwardly bentlips forming stops to prevent the fuse from moving :farther than 1s necessar between the jaws when inserted, these lips being separated as far as possible eing out from` op osite bent slightly in a lateral direction for the purpose of bringing the extended portions 'of the coperating ]aws into alinement with each other.

It is evident that manyl^ modifications of the specific form of device illustrated in the V' drawlng and hereinafter described may be employed. v

Having briefly outlined my improved oonstruction, I will proceed to describe one embodiment thereofthe same beingjillustrated -in the drawing, in which:

Figure 1 is a side elevation of my improved tool shown in connection with a cutout box, the latterl together with the cartridge fuse, with which the jaws of the replacing extremity of the tool'are inV cont-act, being shown in section. Fig-2 is a similar view,` illustrating the manner of using the ytool for the purpose of removing a cartridge fuse from the cut-out box. Fig. 3 is a detail view of the tool shown with the fuse in place at thefuse-removing extremity of the tool, the fuse being in the position vit occupies 4immediately after its removal from the cutout box and .illustrating `the manner in which it4 is held in place by the tool until Patented Apr. 9, 1912.

released by the rearward. movement of the slidable member coperating with the hook. F 4 is a section, taken through the tool, on

the 'line le-4 of 3the fuse, togetherv with the hook, being shown in elevation. Fig. 5 is a section` taken on the line 5-5 of Fig. 4, the hook and the fuse-replacing member of the tool bein shown in elevation. Fig. 6 is a detail View of the slidableblock arranged to co `erate with the fuseremovingv hook.l Fig. is a detail side elevation of the tool, looking in the direction of arrow 7, Fig. 2. Fig. 8 is a detail `end' View of the device, looking in the direction ot' arrow 8, Fig. 2.

The vsame reference characters indicate "thesame parts in all the views.

Let the numeral 5 designate the body part of the handle of my improved fuse changer,

the same being-equipped with a part l6 slid- A ably mounted on the body part and shaped to fit a recess 7 formed in one side of the handle, the part 6, when in one position, completely filling the said recess, but being adapted to be moved forwardly by the thumb of the hand, which grasps the tool, into coperative relation with a hook 8, which may be made of a loop of wire, as

illustrated inthe drawing, or in any other suitable manner. Asshown, the hook portion proper, which is designated by .the

numeral 9, constitutes the closed extremity of the loop, the latter being provided with two parallel rearwardly-extending parts- 10 which are embedded in grooves formed in the body member adjacent the recess?, the

inner extremities of these parts being bent Y at right angles to the parts 10 and inserted The part 6 covers the parts 10 oi the loop, and 1s itself secured in place by two screws 13, or other-suitable fastening devices, which are passed through slots 14 formed in the part 6, the heads of the screws occupying elongated recessesv15 surrounding the slots in openings 12 formed in the body7 member. A

and suliciently largeto readily receive the screw heads, the latter being somewhat larger than the slots 14 for the purpose of retaining the block in place, the said screws 5 penetrating the body member ofthe handle,

as shown at 16.

Then the hook extremity of the tool is employed for removing a fuse from a cutout box, the slidable member 6 is moved for- 10 wardly7 into engagement with the fuse 17,-

(see Fig. 3),-whereby the fuse is clamped between the hook 9 and the slidable block. `By virtue of this construction, it becomes praticable t0 pull the fuse out of the box without danger of receiving a shock, since the hand employed is in contact at all times with insulating material only, and since both the parts 5 and 6 are composed of some suitable insulating material vand all the .20 metal parts of the device are in such position that the hand grasping the handle, as is necessary in using the tool, will notneed to come in contact with any metal part. In any event, the fastening screws `13 are embedded entirely in insulating material, so that, if the hand should by an possibility touch one of 'these screw-hea s,l the user would not receive a shock. The opposite extremity of the tool is equipped with a fuse-replacing member 18, composed of two coperating spring jaws 19, whose outer extremities are outwardly curved, as shown at 20, to facilitate the insertion of a cartridge fuse 1,7 by pressing' the fuse against the outwardly-curved extremities. Slight pressure upon ,the fuse, when in engagement with these curved ends, will cause the jaws to open and allow the fuse to enter until it comes in Contact with the inwardly-project- 40 ing separated lips 21, which form stops to prevent the fuse from passing farther inwardly between the two jaws than is necessary. l't is essential to have these'jaws of reasonable length in order to give them the desired "elasticity or yielding capacity. Hence, it is desirable that the jaws project farther from the handle than the length bet veen the lips 21 and their outer ends, and, by employing the lips 21 as stops, it becomes practicable to give the jaws any desired length. 4 As illustrated in the drawing, the two jaws are formed from an integral piece of r spring metal, constituting a sort of loop, whose closed extremity is inserted in a socket 22 formed in one lextremity of the body member 5 of the handle, this closed extrem'- ity of the loop bein 23, and shaped to ft vthe bottom of the recess or socket, the loop being'held in place by a screw 24 passed through an openi in a part 23 and threaded into the body member of the handle. I

In order to se arate the li ps 21 sufficiently toA form a goo bearing for the fuse in- 0' inade dat, as shown atv substantially as described.

serted therein, the lips are formed on the opposite edges of the two jaws and the jaw members are bent laterally in an edgewise direction to bring the outer portions 25 of the ltwo jaws into alinement, this bend 70 ing of the jaws in an endwise direction serving to further separate the two lips 21, thereby forming a relatively long bearing for the fuse when in place between the` jaws.

From the foregoing description, the use of my improved device will be readil uii-4 derstood. In removing a fuse, the hoo end 9, at one extremity of the tool, is passed underneaththe central portion of a fuse, the cut-out box being grooved, as shown at 26. The slidable part (5 is then moved forwardly by the' pressure of the thumb to the position illustrated in Fig. 2, or until it engages the cartridge fuse 17 on the opposite side from the hook. An outward pull upon the han- 35 dle of the tool will result in the removal of the fuse, which will then be held in place between the hook and the part 6, as shown in F ig. 3, making it racticable to retain the fuse in place until 1t can be de osited in 90 any desired location or receptac e. It is on y necessary to move the part 6 rearwardly in order to drop the fuse. In inserting another fuse, the latter is placed in position between the two jaws of the member 18, as shown by dotted lines in Fig. 4C, and by full lines in Fig. 5. The fuse is then inserted in the cut-out 27 by pressing it into place, so that its metal extremities 28 engage the spring contacts 29 of the box.

The portion 80 of the fuse, intermediate the metal parts 28, is composed of insulating material, this insulating part being composed lof an outer shell of fiber or other suitable insulating material filled with a dry powder 3l, constituting a good insulation, this p owder coming in direct contact with the fuse proper 32, which forms a conductor for the` electric current, but which is de; Stroyed when the current becomes too great for the circuit to carry without 'danger of injuring the dynamo and motors, as well as concealed 'circuit parts which are not readily accessible for purposes of repair.

Having thus described my invention, M5 what 1 claim is:

l.I A device of the class described consisting of a handle composed of insulating l material, equipped at one extremity with a cartridge fuse-placing device, substantially 126 as described.

2. A device of the class described, com prising ahandle member equipped at one extremity with a pair of sprin jaws, whose outer extremities are outward y-curved, the jaws being provided at a suitable. distance from their curved extremities with stops cut therefrom and adapted to be engaged by a fuse when inserte between the jaws,

3. A device of the character described,

at on`e extremity with a pair of spring jaws,

whose free extremities are outwardly curved, the jaws being provided at a suitable 'distance beyond their curved extremities with inwardly bent lips located adja' cent the opposite edges of the jaws.

5. A device of the class described, comprising a handle member equipped at .one extremity with a pair of spring jaws, whose free extremities are outwardly-curved, the

jaws being equi ped intermediate their ex tremities with l1ps offset from the opposite edges. of the jaws, `the latter being bent edgewlse in opposite directions to brmg t-he two jaw parts-into coperative alinement, substantiall as described.

6. A evice ofthe class described, com- .prising an insulating handle, equipped at one extremity with a pair of sprlng jaws formed from an integral piece of Spring metal, constitutin a loop,wh0se closed extremity isv inserte and secured in a socket lformed in'one extremity of the handle member, the free extremities' of the jaws being outwardly curved and the jaws bein equipped at a suitable distance beyond sai extremities with stops arran ed'to limit the travel ofthe fuse inward y' toward the handle, substantially as described.

In testimony' whereof I` aflix my signai ture in presence of two witnesses.

ROBERT C. GROUT.

Witnesses:

T. E. BOWEN,

JN0. GQPowELL. 

